Document analysis system, document analysis method, and document analysis program

Abstract

Possible events in the future can be predicted by analyzing existing data. A document analysis system ( 1 ) includes: a score calculator ( 116 ) that calculates a score that represents a strength of connection of a document extracted from document information to a classification symbol representing a degree of relevancy between the document information and a litigation or fraud investigation; a phase identifying section ( 122 ) that identifies a phase by which a predetermined action to be a cause of the litigation or fraud investigation is classified along with development of the predetermined action, based on the calculated score; and a change estimation unit ( 120 ) that estimates change in the identified phase, based on temporal transition of the phase.

1 . A document analysis system that obtains information recorded in a predetermined computer or server, and analyzes document information including multiple documents included in the obtained information, comprising:
 a score calculator that calculates a score that represents a strength of connection of a document extracted from the document information to a classification symbol representing a degree of relevancy between the document information and a litigation or fraud investigation;   a phase identifying section that identifies a phase by which a predetermined action to be a cause of the litigation or fraud investigation is classified along with development of the predetermined action, based on the score calculated by the score calculator; and   a change estimation unit that estimates change in the phase identified by the phase identifying section, based on temporal transition of the phase.   
     
     
         2 . The document analysis system according to  claim 1 , further comprising
 a score moving average calculator that calculates a moving average of the scores calculated by the score calculator,   wherein the change estimation unit estimates change in the phase by calculating a correlation between the moving average calculated by the score moving average calculator and a predetermined pattern.   
     
     
         3 . The document analysis system according to  claim 1 , further comprising
 a presentation unit that presents the change in the phase estimated by the change estimation unit in a manner allowing a user to grasp the change.   
     
     
         4 - 6 . (canceled) 
     
     
         7 . The document analysis system according to  claim 2 , further comprising:
 a presentation unit that presents the change in the phase estimated by the change estimation unit in a manner allowing a user to grasp the change.   
     
     
         8 . The document analysis system according to  claim 1 , further comprising:
 a classification symbol assigner that assigns the classification symbol to each of the documents using a keyword and/or text included in the document information.   
     
     
         9 . The document analysis system according to  claim 2 , further comprising:
 a classification symbol assigner that assigns the classification symbol to each of the documents using a keyword and/or text included in the document information.   
     
     
         10 . The document analysis system according to  claim 3 , further comprising:
 a classification symbol assigner that assigns the classification symbol to each of the documents using a keyword and/or text included in the document information.   
     
     
         11 . The document analysis system according to  claim 7 , further comprising:
 a classification symbol assigner that assigns the classification symbol to each of the documents using a keyword and/or text included in the document information.   
     
     
         12 . A document analysis method that obtains information recorded in a predetermined computer or server, and analyzes document information including multiple documents included in the obtained information, comprising:
 a score calculation step of calculating a score that represents a strength of connection of a document extracted from the document information to a classification symbol representing a degree of relevancy between the document information and a litigation or fraud investigation;   a phase identification step of identifying a phase by which a predetermined action to be a cause of the litigation or fraud investigation is classified along with development of the predetermined action, based on the score calculated in the score calculation step; and   a change estimation step of estimating change in the phase identified in the phase identification step, based on temporal transition of the phase.   
     
     
         13 . A document analysis program that obtains information recorded in a predetermined computer or server, and analyzes document information including multiple documents included in the obtained information, causing a computer to achieve:
 a score calculation function of calculating a score that represents a strength of connection of a document extracted from the document information to a classification symbol representing a degree of relevancy between the document information and a litigation or fraud investigation;   a phase identifying function of identifying a phase by which a predetermined action to be a cause of the litigation or fraud investigation is classified along with development of the predetermined action, based on the score calculated by the score calculation function; and   a change estimation function of estimating change in the phase identified by the phase identifying function, based on temporal transition of the phase.